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Process Name  : Csrss.exe

Process Path : %WINDOWS%\csrss.exe [ please note that Windows csrss.exe will load from %Windows%\System32 folder ]

Malware Name  : W32.Netsky.AB@mm

Alias             : W32/Netsky-AB, W32/Netsky.AB@MM , Netsky.AA,   WORM_NETSKY.AB, I-Worm.Netsky.AC

Process Type    : Mass mailing Internet worm

Threat level : Medium

Process details :

                     Csrss.exe is the main component dropped Netsky.AB in Windows folder. It is a modified variant of Netsky worm. This mass mailing worm spreads using  e-mail addresses collected from .eml, .txt, .php, .asp, .wab, .doc, .sht, .oft, .msg, .vbs, .rtf, .uin, .shtm, .cgi, .dhtm, .adb, .tbb, .dbx, .pl, .htm, .html, .jsp, .wsh, .xml, .cfg, .mbx, .mdx, .mht, .mmf, .nch, .ods, .stm, .xls, and .ppt files to distribute infected messages. Netsky.AB worm arrives as an e-mail attachment. The infected attachment name, message body and subject is randomly chosen by the worm. 

                     When the worm file is executed, it copies itself to Windows folder as "csrss.exe". Netsky.AB worm modifies registry run section to load automatically on the next startup. The registry modification is given below.

"BagleAV"= %WINDOWS%\csrss.exe

[ By default, %WINDOWS% will be C:\Windows in case of Windows 95/98/ME/XP, C:\Winnt in case of Windows NT/2000 ]

                    Netsky.AB worm uses its own SMTP engine to send infected messages. Netsky.AB worm is detected on 27th April 2004. 

How can I protect my system?

                   Solo has incorporated W32.Netsky.AB@mm infected csrss.exe in its signature file to protect users from this worm attack. Solo antivirus registered users are already protected from this Worm. Make sure that you have installed registered version of Solo Antivirus to protect your system from all virus threats.

How to remove this Worm?

                   If you are already infected with Netsky.AB infected csrss.exe process, you can remove it from your computer using Solo Antivirus software. Use the following link to Download 30 day trial version of Solo antivirus to remove viruses from your computer.

                   Solo anti-virus not only scans for all viruses, it contains a unique System Integrity Checker to protect you from New Internet Worms, Backdoors and malicious VB, Java Scripts. It also effectively removes all existing Internet Worms, File viruses, malicious VB, Java scripts, Trojans, Backdoors, boot sector, partition table and macro viruses.

You can purchase Solo antivirus using the link